[HACKERS] factorial doc bug?

[Tatsuo Ishii]

In typeconv.sgml we have an example:

tgl=> select (4.3 !);
 ?column?
----------
       24
(1 row)

However, actually it does not work:

test=# select (4.3 !);
ERROR:  Unable to identify a postfix operator '!' for type 'double precision'
        You may need to add parentheses or an explicit cast

Shall we correct the doc or is that a bug?
--
Tatsuo Ishii

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